Chris Styles wrote:

...or alternatively, visit www.oldenvelope-and-a-bit-of-masking-tape.com


That method is fine, just not very effective. People will continue to use
matchsticks instead of spending a few pennies on anchors and claim that they
work just as well, and this is the same.

However, if you or someone in your house have allergies, or if you are going
to be doing a lot of drilling, or if you are drilling where the substrate
might be harmful, then you might want to do the job properly, and that's
where DustBubbles come in....

To be fair, I think we are dealing with two different problems he

At the simplest level of just catching the heavy dirty dust generated
when drilling brick or blockwork, then the envelope will deal with most
of the *visible* dust that would otherwise fall on your carpet, and
hence can in many cases be declared adequate.

However when you start trying to catch *all* of the dust produced,
including the very fine particulate dust that is emitted into the *air*
from the drilling site (and later settles out all over the place), then
you are into a whole new ball game. Even with vacuum collection some of
this sub micron stuff will be sucked straight through any filters and
returned to the air again. In these cases, containing the dust at the
production site is going to be more effective. This is obviously
important where the fine dust can not be tolerated either due to its
harmful nature, or its ability to contaminate.

--
Cheers,

John.

/================================================== ===============\
| Internode Ltd - http://www.internode.co.uk |
|-----------------------------------------------------------------|
| John Rumm - john(at)internode(dot)co(dot)uk |
\================================================= ================/